$.ajax({
 type: "get",
 async: false,
 url: "http://localhost:8080/common/LoginChecker.do",
 dataType: "json",
 success: function(data){
	_loginInfo = data;
	
	//1.init top nav.
	//2.init left nav menu.
 },
 error: function(){
	 alert('Login First');
	 window.location="login.html";
 }
});